Overview

Cannabis is an herbal drug that is made from the Cannabis plant. It contains chemicals called cannabinoids. Cannabinoids are found in the highest levels in the leaves and flowers of cannabis. These are the parts of the herb that are used to make medicine.

Don't confuse cannabis with hemp, a similar plant. Hemp contains very low levels of delta-9-tetrahydrocannabinol (THC), less than 0.3% according to legal standards. Both hemp and cannabis also contain other cannabinoids such as cannabidiol (CBD), cannabidivarin (CBDV), cannabigerol (CBG), and others. Unlike hemp, cannabis is illegal under federal law in the U.S. It is classified as a Schedule I controlled substance. But some states have legalized or decriminalized the use of cannabis.

Some people take cannabis by mouth or as a spray to be applied under the tongue for symptoms of multiple sclerosis. Some people also use cannabis for nausea, vomiting, an eye disease called glaucoma, and many other conditions, but there is no good scientific evidence to support these uses.

Cannabis is commonly used as a 'recreational drug' and is either taken by mouth or inhaled.

Coronavirus disease 2019 (COVID-19): Despite increasing interest, there is no good evidence to support using cannabis for COVID-19. Follow healthy lifestyle choices and proven prevention methods instead.

How does it work ?

Cannabis contains chemicals that work by binding to specific sites in the brain and on the nerves.

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CONDITIONS OF USE AND IMPORTANT INFORMATION: This information is meant to supplement, not replace advice from your doctor or healthcare provider and is not meant to cover all possible uses, precautions, interactions or adverse effects. This information may not fit your specific health circumstances. Never delay or disregard seeking professional medical advice from your doctor or other qualified health care provider because of something you have read on WebMD. You should always speak with your doctor or health care professional before you start, stop, or change any prescribed part of your health care plan or treatment and to determine what course of therapy is right for you.

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